About DeckTally

Who runs this site

DeckTally is an independent site of free deck building calculators.

How the calculators work

Every calculator runs in your browser, with no account and nothing saved on your device. Each result uses a short, published formula, and the page shows the working with your own numbers so you can check it.

The deck material calculator lists every formula it uses, a worked example and what it leaves out. The results are estimates. Check local building codes and your supplier before you buy.

Corrections

If you find a mistake, please email a correction and we will fix it.